SpawnCameraShake()

void SpawnCameraShake	(	float	strength = 1,
		float	radius = 2,
		float	smoothness = 5,
		float	radius_decay_speed = 6 )

См. определение в файле dayzplayer.c строка 127

    {
        SpawnCameraShakeProper(strength, radius, smoothness, radius_decay_speed);//done this way in order to avoid duplicating default params which could cause issues under certain circumstances
    }

Перекрестные ссылки SpawnCameraShakeProper().